Four-step random access channel procedure

ABSTRACT

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a network node may transmit configuration information associated with identifying a plurality of sets of random access channel (RACH) occasions (ROs), wherein a first set of ROs, of the plurality of sets of ROs, is associated with a first set of parameters for a low-resolution analog to digital converter (ADC) and a first mode of the network node, and a second set of ROs, of the plurality of sets of ROs, is associated with a second set of parameters for a high-resolution ADC and a second mode of the network node. The network node may communicate, when operating in a particular mode of the network node, using a particular set of ROs, of the plurality of sets of ROs, associated with the particular mode of the network node. Numerous other aspects are described.

FIELD OF THE DISCLOSURE

Aspects of the present disclosure generally relate to wirelesscommunication and to techniques and apparatuses for a four-step randomaccess channel procedure.

BACKGROUND

Wireless communication systems are widely deployed to provide varioustelecommunication services such as telephony, video, data, messaging,and broadcasts. Typical wireless communication systems may employmultiple-access technologies capable of supporting communication withmultiple users by sharing available system resources (e.g., bandwidth,transmit power, or the like). Examples of such multiple-accesstechnologies include code division multiple access (CDMA) systems, timedivision multiple access (TDMA) systems, frequency division multipleaccess (FDMA) systems, orthogonal frequency division multiple access(OFDMA) systems, single-carrier frequency division multiple access(SC-FDMA) systems, time division synchronous code division multipleaccess (TD-SCDMA) systems, and Long Term Evolution (LTE).LTE/LTE-Advanced is a set of enhancements to the Universal MobileTelecommunications System (UMTS) mobile standard promulgated by theThird Generation Partnership Project (3GPP).

A wireless network may include one or more base stations that supportcommunication for a user equipment (UE) or multiple UEs. A UE maycommunicate with a base station via downlink communications and uplinkcommunications. “Downlink” (or “DL”) refers to a communication link fromthe base station to the UE, and “uplink” (or “UL”) refers to acommunication link from the UE to the base station.

The above multiple access technologies have been adopted in varioustelecommunication standards to provide a common protocol that enablesdifferent UEs to communicate on a municipal, national, regional, and/orglobal level. New Radio (NR), which may be referred to as 5G, is a setof enhancements to the LTE mobile standard promulgated by the 3GPP. NRis designed to better support mobile broadband internet access byimproving spectral efficiency, lowering costs, improving services,making use of new spectrum, and better integrating with other openstandards using orthogonal frequency division multiplexing (OFDM) with acyclic prefix (CP) (CP-OFDM) on the downlink, using CP-OFDM and/orsingle-carrier frequency division multiplexing (SC-FDM) (also known asdiscrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink, aswell as supporting beamforming, multiple-input multiple-output (MIMO)antenna technology, and carrier aggregation. As the demand for mobilebroadband access continues to increase, further improvements in LTE, NR,and other radio access technologies remain useful.

SUMMARY

Some aspects described herein relate to a method of wirelesscommunication performed by a network node. The method may includetransmitting configuration information associated with identifying aplurality of sets of random access channel (RACH) occasions (ROs),wherein a first set of ROs, of the plurality of sets of ROs, isassociated with a first set of parameters for a low-resolution analog todigital converter (ADC) and a first mode of the network node, and asecond set of ROs, of the plurality of sets of ROs, is associated with asecond set of parameters for a high-resolution ADC and a second mode ofthe network node. The method may include communicating, when operatingin a particular mode of the network node, using a particular set of ROs,of the plurality of sets of ROs, associated with the particular mode ofthe network node.

Some aspects described herein relate to a method of wirelesscommunication performed by a network node. The method may includereceiving configuration information identifying a plurality of sets ofROs, wherein a first set of ROs, of the plurality of sets of ROs, isassociated with a first set of parameters for a low-resolution ADC and afirst mode, and a second set of ROs, of the plurality of sets of ROs, isassociated with a second set of parameters for a high-resolution ADC anda second mode. The method may include communicating, when based at leastin part on a timing corresponding to a particular mode of the first modeor the second mode, using a particular set of ROs, of the plurality ofsets of ROs, associated with the particular mode.

Some aspects described herein relate to a network node for wirelesscommunication. The network node may include a memory and one or moreprocessors coupled to the memory. The one or more processors may beconfigured to transmit configuration information associated withidentifying a plurality of sets of ROs, wherein a first set of ROs, ofthe plurality of sets of ROs, is associated with a first set ofparameters for a low-resolution ADC and a first mode of the networknode, and a second set of ROs, of the plurality of sets of ROs, isassociated with a second set of parameters for a high-resolution ADC anda second mode of the network node. The one or more processors may beconfigured to communicate, when operating in a particular mode of thenetwork node, using a particular set of ROs, of the plurality of sets ofROs, associated with the particular mode of the network node.

Some aspects described herein relate to a network node for wirelesscommunication. The network node may include a memory and one or moreprocessors coupled to the memory. The one or more processors may beconfigured to receive configuration information identifying a pluralityof sets of ROs, wherein a first set of ROs, of the plurality of sets ofROs, is associated with a first set of parameters for a low-resolutionADC and a first mode, and a second set of ROs, of the plurality of setsof ROs, is associated with a second set of parameters for ahigh-resolution ADC and a second mode. The one or more processors may beconfigured to communicate, when based at least in part on a timingcorresponding to a particular mode of the first mode or the second mode,using a particular set of ROs, of the plurality of sets of ROs,associated with the particular mode.

Some aspects described herein relate to a non-transitorycomputer-readable medium that stores a set of instructions for wirelesscommunication by a network node. The set of instructions, when executedby one or more processors of the network node, may cause the networknode to transmit configuration information associated with identifying aplurality of sets of ROs, wherein a first set of ROs, of the pluralityof sets of ROs, is associated with a first set of parameters for alow-resolution ADC and a first mode of the network node, and a secondset of ROs, of the plurality of sets of ROs, is associated with a secondset of parameters for a high-resolution ADC and a second mode of thenetwork node. The set of instructions, when executed by one or moreprocessors of the network node, may cause the network node tocommunicate, when operating in a particular mode of the network node,using a particular set of ROs, of the plurality of sets of ROs,associated with the particular mode of the network node.

Some aspects described herein relate to a non-transitorycomputer-readable medium that stores a set of instructions for wirelesscommunication by a network node. The set of instructions, when executedby one or more processors of the network node, may cause the networknode to receive configuration information identifying a plurality ofsets of ROs, wherein a first set of ROs, of the plurality of sets ofROs, is associated with a first set of parameters for a low-resolutionADC and a first mode, and a second set of ROs, of the plurality of setsof ROs, is associated with a second set of parameters for ahigh-resolution ADC and a second mode. The set of instructions, whenexecuted by one or more processors of the network node, may cause thenetwork node to communicate, when based at least in part on a timingcorresponding to a particular mode of the first mode or the second mode,using a particular set of ROs, of the plurality of sets of ROs,associated with the particular mode.

Some aspects described herein relate to an apparatus for wirelesscommunication. The apparatus may include means for transmittingconfiguration information associated with identifying a plurality ofsets of ROs, wherein a first set of ROs, of the plurality of sets ofROs, is associated with a first set of parameters for a low-resolutionADC and a first mode of the apparatus, and a second set of ROs, of theplurality of sets of ROs, is associated with a second set of parametersfor a high-resolution ADC and a second mode of the apparatus. Theapparatus may include means for communicating, when operating in aparticular mode of the apparatus, using a particular set of ROs, of theplurality of sets of ROs, associated with the particular mode of theapparatus.

Some aspects described herein relate to an apparatus for wirelesscommunication. The apparatus may include means for receivingconfiguration information identifying a plurality of sets of ROs,wherein a first set of ROs, of the plurality of sets of ROs, isassociated with a first set of parameters for a low-resolution ADC and afirst mode, and a second set of ROs, of the plurality of sets of ROs, isassociated with a second set of parameters for a high-resolution ADC anda second mode. The apparatus may include means for communicating, whenbased at least in part on a timing corresponding to a particular mode ofthe first mode or the second mode, using a particular set of ROs, of theplurality of sets of ROs, associated with the particular mode.

Aspects generally include a method, apparatus, system, computer programproduct, non-transitory computer-readable medium, user equipment, basestation, distributed unit (DU), central unit (CU), mobile terminal (MT),network node, wireless communication device, and/or processing system assubstantially described herein with reference to and as illustrated bythe drawings and specification.

The foregoing has outlined rather broadly the features and technicaladvantages of examples according to the disclosure in order that thedetailed description that follows may be better understood. Additionalfeatures and advantages will be described hereinafter. The conceptionand specific examples disclosed may be readily utilized as a basis formodifying or designing other structures for carrying out the samepurposes of the present disclosure. Such equivalent constructions do notdepart from the scope of the appended claims Characteristics of theconcepts disclosed herein, both their organization and method ofoperation, together with associated advantages, will be betterunderstood from the following description when considered in connectionwith the accompanying figures. Each of the figures is provided for thepurposes of illustration and description, and not as a definition of thelimits of the claims

While aspects are described in the present disclosure by illustration tosome examples, those skilled in the art will understand that suchaspects may be implemented in many different arrangements and scenarios.Techniques described herein may be implemented using different platformtypes, devices, systems, shapes, sizes, and/or packaging arrangements.For example, some aspects may be implemented via integrated chipembodiments or other non-module-component based devices (e.g., end-userdevices, vehicles, communication devices, computing devices, industrialequipment, retail/purchasing devices, medical devices, and/or artificialintelligence devices). Aspects may be implemented in chip-levelcomponents, modular components, non-modular components, non-chip-levelcomponents, device-level components, and/or system-level components.Devices incorporating described aspects and features may includeadditional components and features for implementation and practice ofclaimed and described aspects. For example, transmission and receptionof wireless signals may include one or more components for analog anddigital purposes (e.g., hardware components including antennas, radiofrequency (RF) chains, power amplifiers, modulators, buffers,processors, interleavers, adders, and/or summers). It is intended thataspects described herein may be practiced in a wide variety of devices,components, systems, distributed arrangements, and/or end-user devicesof varying size, shape, and constitution.

BRIEF DESCRIPTION OF THE DRAWINGS

So that the above-recited features of the present disclosure can beunderstood in detail, a more particular description, briefly summarizedabove, may be had by reference to aspects, some of which are illustratedin the appended drawings. It is to be noted, however, that the appendeddrawings illustrate only certain typical aspects of this disclosure andare therefore not to be considered limiting of its scope, for thedescription may admit to other equally effective aspects. The samereference numbers in different drawings may identify the same or similarelements.

FIG. 1 is a diagram illustrating an example of a wireless network, inaccordance with the present disclosure.

FIG. 2 is a diagram illustrating an example of a base station incommunication with a user equipment (UE) in a wireless network, inaccordance with the present disclosure.

FIG. 3 is a diagram illustrating an example of radio access networks, inaccordance with the present disclosure.

FIG. 4 is a diagram illustrating an example of an integrated access andbackhaul (IAB) network architecture, in accordance with the presentdisclosure.

FIG. 5 is a diagram illustrating an example of a two-step random accessprocedure, in accordance with the present disclosure.

FIG. 6 is a diagram illustrating an example of a four-step random accessprocedure, in accordance with the present disclosure.

FIG. 7 is a diagram illustrating an example associated with a four-steprandom access channel procedure, in accordance with the presentdisclosure.

FIGS. 8-9 are diagrams illustrating example processes associated with afour-step random access channel procedure, in accordance with thepresent disclosure.

FIG. 10 is a diagram of an example apparatus for wireless communication,in accordance with the present disclosure.

DETAILED DESCRIPTION

Various aspects of the disclosure are described more fully hereinafterwith reference to the accompanying drawings. This disclosure may,however, be embodied in many different forms and should not be construedas limited to any specific structure or function presented throughoutthis disclosure. Rather, these aspects are provided so that thisdisclosure will be thorough and complete, and will fully convey thescope of the disclosure to those skilled in the art. One skilled in theart should appreciate that the scope of the disclosure is intended tocover any aspect of the disclosure disclosed herein, whether implementedindependently of or combined with any other aspect of the disclosure.For example, an apparatus may be implemented or a method may bepracticed using any number of the aspects set forth herein. In addition,the scope of the disclosure is intended to cover such an apparatus ormethod which is practiced using other structure, functionality, orstructure and functionality in addition to or other than the variousaspects of the disclosure set forth herein. It should be understood thatany aspect of the disclosure disclosed herein may be embodied by one ormore elements of a claim

Several aspects of telecommunication systems will now be presented withreference to various apparatuses and techniques. These apparatuses andtechniques will be described in the following detailed description andillustrated in the accompanying drawings by various blocks, modules,components, circuits, steps, processes, algorithms, or the like(collectively referred to as “elements”). These elements may beimplemented using hardware, software, or combinations thereof. Whethersuch elements are implemented as hardware or software depends upon theparticular application and design constraints imposed on the overallsystem.

While aspects may be described herein using terminology commonlyassociated with a 5G or New Radio (NR) radio access technology (RAT),aspects of the present disclosure can be applied to other RATs, such asa 3G RAT, a 4G RAT, and/or a RAT subsequent to 5G (e.g., 6G).

FIG. 1 is a diagram illustrating an example of a wireless network 100,in accordance with the present disclosure. The wireless network 100 maybe or may include elements of a 5G (e.g., NR) network and/or a 4G (e.g.,Long Term Evolution (LTE)) network, among other examples. The wirelessnetwork 100 may include one or more base stations 110 (shown as a BS 110a, a BS 110 b, a BS 110 c, and a BS 110 d), a user equipment (UE) 120 ormultiple UEs 120 (shown as a UE 120 a, a UE 120 b, a UE 120 c, a UE 120d, and a UE 120 e), and/or other network entities. A base station 110 isan entity that communicates with UEs 120. A base station 110 (sometimesreferred to as a BS) may include, for example, an NR base station, anLTE base station, a Node B, an eNB (e.g., in 4G), a gNB (e.g., in 5G),an access point, and/or a transmission reception point (TRP). Each basestation 110 may provide communication coverage for a particulargeographic area. In the Third Generation Partnership Project (3GPP), theterm “cell” can refer to a coverage area of a base station 110 and/or abase station subsystem serving this coverage area, depending on thecontext in which the term is used.

A base station 110 may provide communication coverage for a macro cell,a pico cell, a femto cell, and/or another type of cell. A macro cell maycover a relatively large geographic area (e.g., several kilometers inradius) and may allow unrestricted access by UEs 120 with servicesubscriptions. A pico cell may cover a relatively small geographic areaand may allow unrestricted access by UEs 120 with service subscription.A femto cell may cover a relatively small geographic area (e.g., a home)and may allow restricted access by UEs 120 having association with thefemto cell (e.g., UEs 120 in a closed subscriber group (CSG)). A basestation 110 for a macro cell may be referred to as a macro base station.A base station 110 for a pico cell may be referred to as a pico basestation. A base station 110 for a femto cell may be referred to as afemto base station or an in-home base station. In the example shown inFIG. 1 , the BS 110 a may be a macro base station for a macro cell 102a, the BS 110 b may be a pico base station for a pico cell 102 b, andthe BS 110 c may be a femto base station for a femto cell 102 c. A basestation may support one or multiple (e.g., three) cells.

In some examples, a cell may not necessarily be stationary, and thegeographic area of the cell may move according to the location of a basestation 110 that is mobile (e.g., a mobile base station). In someexamples, the base stations 110 may be interconnected to one anotherand/or to one or more other base stations 110 or network nodes (notshown) in the wireless network 100 through various types of backhaulinterfaces, such as a direct physical connection or a virtual network,using any suitable transport network.

The wireless network 100 may include one or more relay stations. A relaystation is an entity that can receive a transmission of data from anupstream station (e.g., a base station 110 or a UE 120) and send atransmission of the data to a downstream station (e.g., a UE 120 or abase station 110). A relay station may be a UE 120 that can relaytransmissions for other UEs 120. In the example shown in FIG. 1 , the BS110 d (e.g., a relay base station) may communicate with the BS 110 a(e.g., a macro base station) and the UE 120 d in order to facilitatecommunication between the BS 110 a and the UE 120 d. A base station 110that relays communications may be referred to as a relay station, arelay base station, a relay, or the like.

The wireless network 100 may be a heterogeneous network that includesbase stations 110 of different types, such as macro base stations, picobase stations, femto base stations, relay base stations, or the like.These different types of base stations 110 may have different transmitpower levels, different coverage areas, and/or different impacts oninterference in the wireless network 100. For example, macro basestations may have a high transmit power level (e.g., 5 to 40 watts)whereas pico base stations, femto base stations, and relay base stationsmay have lower transmit power levels (e.g., 0.1 to 2 watts).

A network controller 130 may couple to or communicate with a set of basestations 110 and may provide coordination and control for these basestations 110. The network controller 130 may communicate with the basestations 110 via a backhaul communication link. The base stations 110may communicate with one another directly or indirectly via a wirelessor wireline backhaul communication link.

The UEs 120 may be dispersed throughout the wireless network 100, andeach UE 120 may be stationary or mobile. A UE 120 may include, forexample, an access terminal, a terminal, a mobile station, and/or asubscriber unit. A UE 120 may be a cellular phone (e.g., a smart phone),a personal digital assistant (PDA), a wireless modem, a wirelesscommunication device, a handheld device, a laptop computer, a cordlessphone, a wireless local loop (WLL) station, a tablet, a camera, a gamingdevice, a netbook, a smartbook, an ultrabook, a medical device, abiometric device, a wearable device (e.g., a smart watch, smartclothing, smart glasses, a smart wristband, smart jewelry (e.g., a smartring or a smart bracelet)), an entertainment device (e.g., a musicdevice, a video device, and/or a satellite radio), a vehicular componentor sensor, a smart meter/sensor, industrial manufacturing equipment, aglobal positioning system device, and/or any other suitable device thatis configured to communicate via a wireless medium.

Some UEs 120 may be considered machine-type communication (MTC) orevolved or enhanced machine-type communication (eMTC) UEs. An MTC UEand/or an eMTC UE may include, for example, a robot, a drone, a remotedevice, a sensor, a meter, a monitor, and/or a location tag, that maycommunicate with a base station, another device (e.g., a remote device),or some other entity. Some UEs 120 may be considered Internet-of-Things(IoT) devices, and/or may be implemented as NB-IoT (narrowband IoT)devices. Some UEs 120 may be considered a Customer Premises Equipment. AUE 120 may be included inside a housing that houses components of the UE120, such as processor components and/or memory components. In someexamples, the processor components and the memory components may becoupled together. For example, the processor components (e.g., one ormore processors) and the memory components (e.g., a memory) may beoperatively coupled, communicatively coupled, electronically coupled,and/or electrically coupled.

In general, any number of wireless networks 100 may be deployed in agiven geographic area. Each wireless network 100 may support aparticular RAT and may operate on one or more frequencies. A RAT may bereferred to as a radio technology, an air interface, or the like. Afrequency may be referred to as a carrier, a frequency channel, or thelike. Each frequency may support a single RAT in a given geographic areain order to avoid interference between wireless networks of differentRATs. In some cases, NR or 5G RAT networks may be deployed.

In some examples, two or more UEs 120 (e.g., shown as UE 120 a and UE120 e) may communicate directly using one or more sidelink channels(e.g., without using a base station 110 as an intermediary tocommunicate with one another). For example, the UEs 120 may communicateusing peer-to-peer (P2P) communications, device-to-device (D2D)communications, a vehicle-to-everything (V2X) protocol (e.g., which mayinclude a vehicle-to-vehicle (V2V) protocol, a vehicle-to-infrastructure(V2I) protocol, or a vehicle-to-pedestrian (V2P) protocol), and/or amesh network. In such examples, a UE 120 may perform schedulingoperations, resource selection operations, and/or other operationsdescribed elsewhere herein as being performed by the base station 110.

Devices of the wireless network 100 may communicate using theelectromagnetic spectrum, which may be subdivided by frequency orwavelength into various classes, bands, channels, or the like. Forexample, devices of the wireless network 100 may communicate using oneor more operating bands. In 5G NR, two initial operating bands have beenidentified as frequency range designations FR1 (410 MHz-7.125 GHz) andFR2 (24.25 GHz-52.6 GHz). It should be understood that although aportion of FR1 is greater than 6 GHz, FR1 is often referred to(interchangeably) as a “Sub-6 GHz” band in various documents andarticles. A similar nomenclature issue sometimes occurs with regard toFR2, which is often referred to (interchangeably) as a “millimeter wave”band in documents and articles, despite being different from theextremely high frequency (EHF) band (30 GHz-300 GHz) which is identifiedby the International Telecommunications Union (ITU) as a “millimeterwave” band.

The frequencies between FR1 and FR2 are often referred to as mid-bandfrequencies. Recent 5G NR studies have identified an operating band forthese mid-band frequencies as frequency range designation FR3 (7.125GHz-24.25 GHz). Frequency bands falling within FR3 may inherit FR1characteristics and/or FR2 characteristics, and thus may effectivelyextend features of FR1 and/or FR2 into mid-band frequencies. Inaddition, higher frequency bands are currently being explored to extend5G NR operation beyond 52.6 GHz. For example, three higher operatingbands have been identified as frequency range designations FR4a or FR4-1(52.6 GHz-71 GHz), FR4 (52.6 GHz-114.25 GHz), and FR5 (114.25 GHz-300GHz). Each of these higher frequency bands falls within the EHF band.

With the above examples in mind, unless specifically stated otherwise,it should be understood that the term “sub-6 GHz” or the like, if usedherein, may broadly represent frequencies that may be less than 6 GHz,may be within FR1, or may include mid-band frequencies. Further, unlessspecifically stated otherwise, it should be understood that the term“millimeter wave” or the like, if used herein, may broadly representfrequencies that may include mid-band frequencies, may be within FR2,FR4, FR4-a or FR4-1, and/or FR5, or may be within the EHF band. It iscontemplated that the frequencies included in these operating bands(e.g., FR1, FR2, FR3, FR4, FR4-a, FR4-1, and/or FR5) may be modified,and techniques described herein are applicable to those modifiedfrequency ranges.

In some aspects, a network node (e.g., a base station 110) may include acommunication manager 150. As described in more detail elsewhere herein,the communication manager 150 may transmit configuration informationassociated with identifying a plurality of sets of random access channel(RACH) occasions (ROs), wherein a first set of ROs, of the plurality ofsets of ROs, is associated with a first set of parameters for alow-resolution analog to digital converter (ADC) and a first mode of thenetwork node and a second set of ROs, of the plurality of sets of ROs,is associated with a second set of parameters for a high-resolution ADCand a second mode of the network node; and communicate, when operatingin a particular mode of the network node, using a particular set of ROs,of the plurality of sets of ROs, associated with the particular mode ofthe network node. Additionally, or alternatively, the communicationmanager 150 may perform one or more other operations described herein.

In some aspects, a network node (e.g., a UE 120) may include acommunication manager 140. As described in more detail elsewhere herein,the communication manager 140 may receive configuration informationidentifying a plurality of sets of ROs, wherein a first set of ROs, ofthe plurality of sets of ROs, is associated with a first set ofparameters for a low-resolution ADC and a first mode, and a second setof ROs, of the plurality of sets of ROs, is associated with a second setof parameters for a high-resolution ADC and a second mode; andcommunicate, when based at least in part on a timing corresponding to aparticular mode of the first mode or the second mode, using a particularset of ROs, of the plurality of sets of ROs, associated with theparticular mode. Additionally, or alternatively, the communicationmanager 140 may perform one or more other operations described herein.

As indicated above, FIG. 1 is provided as an example. Other examples maydiffer from what is described with regard to FIG. 1 .

FIG. 2 is a diagram illustrating an example 200 of a base station 110 incommunication with a UE 120 in a wireless network 100, in accordancewith the present disclosure. The base station 110 may be equipped with aset of antennas 234 a through 234 t, such as T antennas (T≥1). The UE120 may be equipped with a set of antennas 252 a through 252 r, such asR antennas (R≥1).

At the base station 110, a transmit processor 220 may receive data, froma data source 212, intended for the UE 120 (or a set of UEs 120). Thetransmit processor 220 may select one or more modulation and codingschemes (MCSs) for the UE 120 based at least in part on one or morechannel quality indicators (CQIs) received from that UE 120. The basestation 110 may process (e.g., encode and modulate) the data for the UE120 based at least in part on the MCS(s) selected for the UE 120 and mayprovide data symbols for the UE 120. The transmit processor 220 mayprocess system information (e.g., for semi-static resource partitioninginformation (SRPI)) and control information (e.g., CQI requests, grants,and/or upper layer signaling) and provide overhead symbols and controlsymbols. The transmit processor 220 may generate reference symbols forreference signals (e.g., a cell-specific reference signal (CRS) or ademodulation reference signal (DMRS)) and synchronization signals (e.g.,a primary synchronization signal (PSS) or a secondary synchronizationsignal (SSS)). A transmit (TX) multiple-input multiple-output (MIMO)processor 230 may perform spatial processing (e.g., precoding) on thedata symbols, the control symbols, the overhead symbols, and/or thereference symbols, if applicable, and may provide a set of output symbolstreams (e.g., T output symbol streams) to a corresponding set of modems232 (e.g., T modems), shown as modems 232 a through 232 t. For example,each output symbol stream may be provided to a modulator component(shown as MOD) of a modem 232. Each modem 232 may use a respectivemodulator component to process a respective output symbol stream (e.g.,for OFDM) to obtain an output sample stream. Each modem 232 may furtheruse a respective modulator component to process (e.g., convert toanalog, amplify, filter, and/or upconvert) the output sample stream toobtain a downlink signal. The modems 232 a through 232 t may transmit aset of downlink signals (e.g., T downlink signals) via a correspondingset of antennas 234 (e.g., T antennas), shown as antennas 234 a through234 t.

At the UE 120, a set of antennas 252 (shown as antennas 252 a through252 r) may receive the downlink signals from the base station 110 and/orother base stations 110 and may provide a set of received signals (e.g.,R received signals) to a set of modems 254 (e.g., R modems), shown asmodems 254 a through 254 r. For example, each received signal may beprovided to a demodulator component (shown as DEMOD) of a modem 254.Each modem 254 may use a respective demodulator component to condition(e.g., filter, amplify, downconvert, and/or digitize) a received signalto obtain input samples. Each modem 254 may use a demodulator componentto further process the input samples (e.g., for OFDM) to obtain receivedsymbols. A MIMO detector 256 may obtain received symbols from the modems254, may perform MIMO detection on the received symbols if applicable,and may provide detected symbols. A receive processor 258 may process(e.g., demodulate and decode) the detected symbols, may provide decodeddata for the UE 120 to a data sink 260, and may provide decoded controlinformation and system information to a controller/processor 280. Theterm “controller/processor” may refer to one or more controllers, one ormore processors, or a combination thereof. A channel processor maydetermine a reference signal received power (RSRP) parameter, a receivedsignal strength indicator (RSSI) parameter, a reference signal receivedquality (RSRQ) parameter, and/or a CQI parameter, among other examples.In some examples, one or more components of the UE 120 may be includedin a housing 284.

The network controller 130 may include a communication unit 294, acontroller/processor 290, and a memory 292. The network controller 130may include, for example, one or more devices in a core network. Thenetwork controller 130 may communicate with the base station 110 via thecommunication unit 294.

One or more antennas (e.g., antennas 234 a through 234 t and/or antennas252 a through 252 r) may include, or may be included within, one or moreantenna panels, one or more antenna groups, one or more sets of antennaelements, and/or one or more antenna arrays, among other examples. Anantenna panel, an antenna group, a set of antenna elements, and/or anantenna array may include one or more antenna elements (within a singlehousing or multiple housings), a set of coplanar antenna elements, a setof non-coplanar antenna elements, and/or one or more antenna elementscoupled to one or more transmission and/or reception components, such asone or more components of FIG. 2 .

On the uplink, at the UE 120, a transmit processor 264 may receive andprocess data from a data source 262 and control information (e.g., forreports that include RSRP, RSSI, RSRQ, and/or CQI) from thecontroller/processor 280. The transmit processor 264 may generatereference symbols for one or more reference signals. The symbols fromthe transmit processor 264 may be precoded by a TX MIMO processor 266 ifapplicable, further processed by the modems 254 (e.g., for DFT-s-OFDM orCP-OFDM), and transmitted to the base station 110. In some examples, themodem 254 of the UE 120 may include a modulator and a demodulator. Insome examples, the UE 120 includes a transceiver. The transceiver mayinclude any combination of the antenna(s) 252, the modem(s) 254, theMIMO detector 256, the receive processor 258, the transmit processor264, and/or the TX MIMO processor 266. The transceiver may be used by aprocessor (e.g., the controller/processor 280) and the memory 282 toperform aspects of any of the methods described herein (e.g., withreference to FIGS. 7-10 ).

At the base station 110, the uplink signals from UE 120 and/or other UEsmay be received by the antennas 234, processed by the modem 232 (e.g., ademodulator component, shown as DEMOD, of the modem 232), detected by aMIMO detector 236 if applicable, and further processed by a receiveprocessor 238 to obtain decoded data and control information sent by theUE 120. The receive processor 238 may provide the decoded data to a datasink 239 and provide the decoded control information to thecontroller/processor 240. The base station 110 may include acommunication unit 244 and may communicate with the network controller130 via the communication unit 244. The base station 110 may include ascheduler 246 to schedule one or more UEs 120 for downlink and/or uplinkcommunications. In some examples, the modem 232 of the base station 110may include a modulator and a demodulator. In some examples, the basestation 110 includes a transceiver. The transceiver may include anycombination of the antenna(s) 234, the modem(s) 232, the MIMO detector236, the receive processor 238, the transmit processor 220, and/or theTX MIMO processor 230. The transceiver may be used by a processor (e.g.,the controller/processor 240) and the memory 242 to perform aspects ofany of the methods described herein (e.g., with reference to FIGS. 7-10).

The controller/processor 240 of the base station 110, thecontroller/processor 280 of the UE 120, and/or any other component(s) ofFIG. 2 may perform one or more techniques associated with a four-steprandom access channel procedure, as described in more detail elsewhereherein. In some aspects, the network node described herein is the basestation 110, is included in the base station 110, or includes one ormore components of the base station 110 shown in FIG. 2 . In someaspects, the network node described herein is the UE 120, is included inthe UE 120, or includes one or more components of the UE 120 shown inFIG. 2 . The controller/processor 240 of the base station 110, thecontroller/processor 280 of the UE 120, and/or any other component(s) ofFIG. 2 may perform or direct operations of, for example, process 800 ofFIG. 8 , process 900 of FIG. 9 , and/or other processes as describedherein. The memory 242 and the memory 282 may store data and programcodes for the base station 110 and the UE 120, respectively. In someexamples, the memory 242 and/or the memory 282 may include anon-transitory computer-readable medium storing one or more instructions(e.g., code and/or program code) for wireless communication. Forexample, the one or more instructions, when executed (e.g., directly, orafter compiling, converting, and/or interpreting) by one or moreprocessors of the base station 110 and/or the UE 120, may cause the oneor more processors, the UE 120, and/or the base station 110 to performor direct operations of, for example, process 800 of FIG. 8 , process900 of FIG. 9 , and/or other processes as described herein. In someexamples, executing instructions may include running the instructions,converting the instructions, compiling the instructions, and/orinterpreting the instructions, among other examples.

In some aspects, a network node (e.g., the base station 11) includesmeans for transmitting configuration information associated withidentifying a plurality of sets of ROs, wherein a first set of ROs, ofthe plurality of sets of ROs, is associated with a first set ofparameters for a low-resolution ADC and a first mode of the networknode, and a second set of ROs, of the plurality of sets of ROs, isassociated with a second set of parameters for a high-resolution ADC anda second mode of the network node; and/or means for communicating, whenoperating in a particular mode of the network node, using a particularset of ROs, of the plurality of sets of ROs, associated with theparticular mode of the network node. In some aspects, the means for thenetwork node to perform operations described herein may include, forexample, one or more of communication manager 150, transmit processor220, TX MIMO processor 230, modem 232, antenna 234, MIMO detector 236,receive processor 238, controller/processor 240, memory 242, orscheduler 246.

In some aspects, a network node (e.g., the UE 120) includes means forreceiving configuration information identifying a plurality of sets ofROs, wherein a first set of ROs, of the plurality of sets of ROs, isassociated with a first set of parameters for a low-resolution ADC and afirst mode, and a second set of ROs, of the plurality of sets of ROs, isassociated with a second set of parameters for a high-resolution ADC anda second mode; and/or means for communicating, when based at least inpart on a timing corresponding to a particular mode of the first mode orthe second mode, using a particular set of ROs, of the plurality of setsof ROs, associated with the particular mode. In some aspects, the meansfor the network node to perform operations described herein may include,for example, one or more of communication manager 140, antenna 252,modem 254, MIMO detector 256, receive processor 258, transmit processor264, TX MIMO processor 266, controller/processor 280, or memory 282.

While blocks in FIG. 2 are illustrated as distinct components, thefunctions described above with respect to the blocks may be implementedin a single hardware, software, or combination component or in variouscombinations of components. For example, the functions described withrespect to the transmit processor 264, the receive processor 258, and/orthe TX MIMO processor 266 may be performed by or under the control ofthe controller/processor 280.

As indicated above, FIG. 2 is provided as an example. Other examples maydiffer from what is described with regard to FIG. 2 .

FIG. 3 is a diagram illustrating examples 300 of radio access networks,in accordance with the present disclosure.

As shown by reference number 305, a traditional (e.g., 3G, 4G, or LTE)radio access network may include multiple base stations 310 (e.g.,access nodes (AN)), where each base station 310 communicates with a corenetwork via a wired backhaul link 315, such as a fiber connection. Abase station 310 may communicate with a UE 320 via an access link 325,which may be a wireless link. A base station 310 shown in FIG. 3 may bea base station 110 shown in FIG. 1 . A UE 320 shown in FIG. 3 may be aUE 120 shown in FIG. 1 .

As shown by reference number 330, a radio access network may include awireless backhaul network, sometimes referred to as an integrated accessand backhaul (IAB) network. In an IAB network, at least one base stationis an anchor base station 335 that communicates with a core network viaa wired backhaul link 340, such as a fiber connection. An anchor basestation 335 may also be referred to as an IAB donor (or IAB-donor). TheIAB network may include one or more non-anchor base stations 345,sometimes referred to as relay base stations or IAB nodes (orIAB-nodes). The non-anchor base station 345 may communicate directly orindirectly with the anchor base station 335 via one or more backhaullinks 350 (e.g., via one or more non-anchor base stations 345) to form abackhaul path to the core network for carrying backhaul traffic.Backhaul link 350 may be a wireless link. Anchor base station(s) 335and/or non-anchor base station(s) 345 may communicate with one or moreUEs 355 via access links 360, which may be wireless links for carryingaccess traffic. An anchor base station 335 and/or a non-anchor basestation 345 shown in FIG. 3 may be a base station 110 shown in FIG. 1 .A UE 355 shown in FIG. 3 may be a UE 120 shown in FIG. 1 .

As shown by reference number 365, in some aspects, a radio accessnetwork that includes an IAB network may utilize millimeter wavetechnology and/or directional communications (e.g., beamforming) forcommunications between base stations and/or UEs (e.g., between two basestations, between two UEs, and/or between a base station and a UE). Forexample, wireless backhaul links 370 between base stations may usemillimeter wave signals to carry information and/or may be directedtoward a target base station using beamforming. Similarly, the wirelessaccess links 375 between a UE and a base station may use millimeter wavesignals and/or may be directed toward a target wireless node (e.g., a UEand/or a base station). In this way, inter-link interference may bereduced.

The configuration of base stations and UEs in FIG. 3 is shown as anexample, and other examples are contemplated. For example, one or morebase stations illustrated in FIG. 3 may be replaced by one or more UEsthat communicate via a UE-to-UE access network (e.g., a peer-to-peernetwork or a device-to-device network). In this case, “anchor node” mayrefer to a UE that is directly in communication with a base station(e.g., an anchor base station or a non-anchor base station).

In an IAB network, such as is shown by reference numbers 330 and 365,each device may be referred to as a node or a network node. For example,a base station 345 may be a first network node and a UE 355 may be asecond network node. Additionally, or alternatively, as described inmore detail herein, a device may include multiple network nodesrepresenting multiple hops in a communication path. For example, a basestation 345 may be associated with a distributed architecture (e.g., acentral unit (CU) and one or more distributed units (DUs), with each hopin the distributed architecture (e.g., the CU and each DU) beingreferred to as separate network nodes. In this case, a first networknode (e.g., a CU) may communicate on a backhaul with a second networknode (e.g., another CU) and may transmit, on a downlink, to a thirdnetwork node (e.g., a DU, which may further transmit on a downlink to afourth network node, such as a UE).

As indicated above, FIG. 3 is provided as an example. Other examples maydiffer from what is described with regard to FIG. 3 .

FIG. 4 is a diagram illustrating an example 400 of an IAB networkarchitecture, in accordance with the present disclosure.

As shown in FIG. 4 , an IAB network may include an IAB donor 405 (shownas IAB-donor) that connects to a core network via a wired connection(shown as a wireline backhaul). For example, an Ng interface of an IABdonor 405 may terminate at a core network. Additionally, oralternatively, an IAB donor 405 may connect to one or more devices ofthe core network that provide a core access and mobility managementfunction (AMF). An IAB donor 405 may include a base station 110, such asan anchor base station, as described above in connection with 3. Asshown, an IAB donor 405 may include a CU, which may perform access nodecontroller (ANC) functions and/or AMF functions. The CU may configure aDU of the IAB donor 405 and/or may configure one or more IAB nodes 410(e.g., an MT and/or a DU of an IAB node 410) that connect to the corenetwork via the IAB donor 405. Thus, a CU of an IAB donor 405 maycontrol and/or configure the entire IAB network that connects to thecore network via the IAB donor 405, such as by using control messagesand/or configuration messages (e.g., a radio resource control (RRC)configuration message or an F1 application protocol (F1-AP) message).

As further shown in FIG. 4 , the IAB network may include IAB nodes 410(shown as IAB-node 1, IAB-node 2, and IAB-node 3) that connect to thecore network via the IAB donor 405. As shown, an IAB node 410 mayinclude mobile termination (MT) functions (also sometimes referred to asUE functions (UEF)) and may include DU functions (also sometimesreferred to as access node functions (ANF)). The MT functions of an IABnode 410 (e.g., a child node) may be controlled and/or scheduled byanother IAB node 410 (e.g., a parent node of the child node) and/or byan IAB donor 405. The DU functions of an IAB node 410 (e.g., a parentnode) may control and/or schedule other IAB nodes 410 (e.g., child nodesof the parent node) and/or UEs 120. Thus, a DU may be referred to as ascheduling node or a scheduling component, and an MT may be referred toas a scheduled node or a scheduled component. An IAB donor 405 mayinclude DU functions and not MT functions. That is, an IAB donor 405 mayconfigure, control, and/or schedule communications of IAB nodes 410and/or UEs 120. A UE 120 may include only MT functions, and not DUfunctions. That is, communications of a UE 120 may be controlled and/orscheduled by an IAB donor 405 and/or an IAB node 410 (e.g., a parentnode of the UE 120).

When a first node controls and/or schedules communications for a secondnode (e.g., when the first node provides DU functions for the secondnode's MT functions), the first node may be referred to as a parent nodeof the second node, and the second node may be referred to as a childnode of the first node. A child node of the second node may be referredto as a grandchild node of the first node. Thus, a DU function of aparent node may control and/or schedule communications for child nodesof the parent node. A parent node may be an IAB donor 405 or an IAB node410, and a child node may be an IAB node 410 or a UE 120. Communicationsof an MT function of a child node may be controlled and/or scheduled bya parent node of the child node.

As further shown in FIG. 4 , a link between a UE 120 (e.g., which onlyhas MT functions, and not DU functions) and an IAB donor 405, or betweena UE 120 and an IAB node 410, may be referred to as an access link 415.Access link 415 may be a wireless access link that provides a UE 120with radio access to a core network via an IAB donor 405, and optionallyvia one or more IAB nodes 410. Thus, the network illustrated in 4 may bereferred to as a multi-hop network or a wireless multi-hop network.

As further shown in FIG. 4 , a link between an IAB donor 405 and an IABnode 410 or between two IAB nodes 410 may be referred to as a backhaullink 420. Backhaul link 420 may be a wireless backhaul link thatprovides an IAB node 410 with radio access to a core network via an IABdonor 405, and optionally via one or more other IAB nodes 410. In an IABnetwork, network resources for wireless communications (e.g., timeresources, frequency resources, and/or spatial resources) may be sharedbetween access links 415 and backhaul links 420. In some aspects, abackhaul link 420 may be a primary backhaul link or a secondary backhaullink (e.g., a backup backhaul link). In some aspects, a secondarybackhaul link may be used if a primary backhaul link fails, becomescongested, and/or becomes overloaded, among other examples. For example,a backup link 425 between IAB-node 2 and IAB-node 3 may be used forbackhaul communications if a primary backhaul link between IAB-node 2and IAB-node 1 fails. As used herein, “node,” “network node,” or“wireless node” may refer to an IAB donor 405 or an IAB node 410.

As indicated above, FIG. 4 is provided as an example. Other examples maydiffer from what is described with regard to FIG. 4 .

FIG. 5 is a diagram illustrating an example 500 of a two-step randomaccess procedure, in accordance with the present disclosure. As shown inFIG. 5 , a base station 110 and a UE 120 may communicate with oneanother to perform the two-step random access procedure.

As shown by reference number 505, the base station 110 may transmit, andthe UE 120 may receive, one or more synchronization signal blocks (SSBs)and random access configuration information. In some aspects, the randomaccess configuration information may be transmitted in and/or indicatedby system information (e.g., in one or more system information blocks(SIBs)) and/or an SSB, such as for contention-based random access.Additionally, or alternatively, the random access configurationinformation may be transmitted in a radio resource control (RRC) messageand/or a physical downlink control channel (PDCCH) order message thattriggers a RACH procedure, such as for contention-free random access.The random access configuration information may include one or moreparameters to be used in the two-step random access procedure, such asone or more parameters for transmitting a random access message (RAM)and/or receiving a random access response (RAR) to the RAM.

As shown by reference number 510, the UE 120 may transmit, and the basestation 110 may receive, a RAM preamble. As shown by reference number515, the UE 120 may transmit, and the base station 110 may receive, aRAM payload. As shown, the UE 120 may transmit the RAM preamble and theRAM payload to the base station 110 as part of an initial (or first)step of the two-step random access procedure. In some aspects, the RAMmay be referred to as message A, msgA, a first message, or an initialmessage in a two-step random access procedure. Furthermore, in someaspects, the RAM preamble may be referred to as a message A preamble, amsgA preamble, a preamble, or a physical random access channel (PRACH)preamble, and the RAM payload may be referred to as a message A payload,a msgA payload, or a payload. In some aspects, the RAM may include someor all of the contents of message 1 (msg1) and message 3 (msg3) of afour-step random access procedure, which is described in more detailbelow. For example, the RAM preamble may include some or all contents ofmessage 1 (e.g., a PRACH preamble), and the RAM payload may include someor all contents of message 3 (e.g., a UE identifier, uplink controlinformation (UCI), and/or a physical uplink shared channel (PUSCH)transmission).

As shown by reference number 520, the base station 110 may receive theRAM preamble transmitted by the UE 120. If the base station 110successfully receives and decodes the RAM preamble, the base station 110may then receive and decode the RAM payload.

As shown by reference number 525, the base station 110 may transmit anRAR (sometimes referred to as an RAR message). As shown, the basestation 110 may transmit the RAR message as part of a second step of thetwo-step random access procedure. In some aspects, the RAR message maybe referred to as message B, msgB, or a second message in a two-steprandom access procedure. The RAR message may include some or all of thecontents of message 2 (msg2) and message 4 (msg4) of a four-step randomaccess procedure. For example, the RAR message may include the detectedPRACH preamble identifier, the detected UE identifier, a timing advancevalue, and/or contention resolution information.

As shown by reference number 530, as part of the second step of thetwo-step random access procedure, the base station 110 may transmit aphysical downlink control channel (PDCCH) communication for the RAR. ThePDCCH communication may schedule a physical downlink shared channel(PDSCH) communication that includes the RAR. For example, the PDCCHcommunication may indicate a resource allocation (e.g., in downlinkcontrol information (DCI)) for the PDSCH communication.

As shown by reference number 535, as part of the second step of thetwo-step random access procedure, the base station 110 may transmit thePDSCH communication for the RAR, as scheduled by the PDCCHcommunication. The RAR may be included in a medium access control (MAC)protocol data unit (PDU) of the PDSCH communication. As shown byreference number 540, if the UE 120 successfully receives the RAR, theUE 120 may transmit a hybrid automatic repeat request (HARQ)acknowledgement (ACK).

As indicated above, FIG. 5 is provided as an example. Other examples maydiffer from what is described with regard to FIG. 5 .

FIG. 6 is a diagram illustrating an example 600 of a four-step randomaccess procedure, in accordance with the present disclosure. As shown inFIG. 6 , a base station 110 and a UE 120 may communicate with oneanother to perform the four-step random access procedure.

As shown by reference number 605, the base station 110 may transmit, andthe UE 120 may receive, one or more SSBs and random access configurationinformation. In some aspects, the random access configurationinformation may be transmitted in and/or indicated by system information(SI) (e.g., in one or more system information blocks (SIBs)) and/or anSSB, such as for contention-based random access. Additionally, oralternatively, the random access configuration information may betransmitted in a radio resource control (RRC) message and/or a physicaldownlink control channel (PDCCH) order message that triggers a RACHprocedure, such as for contention-free random access. The random accessconfiguration information may include one or more parameters to be usedin the random access procedure, such as one or more parameters fortransmitting a RAM and/or one or more parameters for receiving an RAR.For example, the random access configuration may identify a set of RACHoccasions (ROs) in which resources are allocated for communicationsassociated with a RACH procedure.

As shown by reference number 610, the UE 120 may transmit a RAM, whichmay include a preamble (sometimes referred to as a random accesspreamble, a PRACH preamble, or a RAM preamble). The message thatincludes the preamble may be referred to as a message 1, msg1, MSG1, afirst message, or an initial message in a four-step random accessprocedure. The random access message may include a random accesspreamble identifier.

As shown by reference number 615, the base station 110 may transmit anRAR as a reply to the preamble. The message that includes the RAR may bereferred to as message 2, msg2, MSG2, or a second message in a four-steprandom access procedure. In some aspects, the RAR may indicate thedetected random access preamble identifier (e.g., received from the UE120 in msg1). Additionally, or alternatively, the RAR may indicate aresource allocation to be used by the UE 120 to transmit message 3(msg3).

In some aspects, as part of the second step of the four-step randomaccess procedure, the base station 110 may transmit a PDCCHcommunication for the RAR. The PDCCH communication may schedule a PDSCHcommunication that includes the RAR. For example, the PDCCHcommunication may indicate a resource allocation for the PDSCHcommunication. Also, as part of the second step of the four-step randomaccess procedure, the base station 110 may transmit the PDSCHcommunication for the RAR, as scheduled by the PDCCH communication. TheRAR may be included in a MAC PDU of the PDSCH communication.

As shown by reference number 620, the UE 120 may transmit an RRCconnection request message. The RRC connection request message may bereferred to as message 3, msg3, MSG3, or a third message of a four-steprandom access procedure. In some aspects, the RRC connection request mayinclude a UE identifier, UCI, and/or a PUSCH communication (e.g., an RRCconnection request).

As shown by reference number 625, the base station 110 may transmit anRRC connection setup message. The RRC connection setup message may bereferred to as message 4, msg4, MSG4, or a fourth message of a four-steprandom access procedure. In some aspects, the RRC connection setupmessage may include the detected UE identifier, a timing advance value,and/or contention resolution information. As shown by reference number630, if the UE 120 successfully receives the RRC connection setupmessage, the UE 120 may transmit a HARQ ACK.

As indicated above, FIG. 6 is provided as an example. Other examples maydiffer from what is described with regard to FIG. 6 .

RACH procedures, such as a two-step RACH procedure or a four-step RACHprocedure, as described above, may use energy resources of a networknode, such as a DU of a base station (e.g., a DU that is communicatingwith another network node, such as a UE). To reduce a utilization ofenergy resources, the network node may periodically enter an energysaving mode. For example, the DU may be configured to enter an energysaving mode during a subset of time resources in a set of slots. In theenergy saving mode, the DU may be configured to forgo certain periodicmonitoring or transmitting, reduce a quantity of antennas that are usedfor communication (e.g., relative to a non-energy saving mode, or changeanalog to digital converters (ADCs) or digital to analog converters(DACs) (e.g., from a high-resolution ADC to a low-resolution ADC).Reducing energy resource utilization by entering the energy saving modemay enable the DU to be used in certain deployments, such as inself-organizing network (SON) deployments or minimization of drive test(MDT) deployments.

However, when a network node is configured for a RACH procedure, such asa four-step RACH procedure, a configuration for the RACH procedure maynot take into account that the network node is operating in anenergy-saving mode. As a result, communication performance may be pooror interrupted as a result of a reception power, a preamble format, asubcarrier spacing (SCS), or a reference signal received power (RSRP)threshold, among other examples being poorly aligned to a configurationof the network node in the energy-saving mode (e.g., the network nodeusing a low-resolution ADC).

Some aspects described herein enable configuration of ROs with a RACHconfiguration aligned to the energy-saving mode of a network node. Forexample, a DU may be configured with a first set of ROs aligned to theenergy-saving mode (e.g., in time resources in which the DU is in theenergy-saving mode) and a second set of ROs aligned to anon-energy-saving mode (e.g., in time resources in which the DU is notin the energy-saving mode). In this case, the first set of ROs, whichmay be termed “low-resolution ROs,” may be associated with a first RACHconfiguration aligned to the DU using a low-resolution ADC and thesecond set of ROs, which may be termed “high-resolution ROs,” may beassociated with a second RACH configuration aligned to the DU using ahigh-resolution ADC. In this case, the different RACH configurationsaccount for different detection reliabilities associated with use ofdifferent ADCs, thereby improving communication performance and avoidingcommunication interruptions relative to using a single RACHconfiguration for all ROs for four-step RACH procedures.

FIG. 7 is a diagram illustrating an example 700 associated with afour-step RACH procedure. As shown in FIG. 7 , a first network node 705(e.g., a UE 120) and a second network node 710 (e.g., a DU of a basestation 110) may communicate with one another.

As shown by reference number 715, first network node 705 may receiveinformation identifying random access configurations for a first set ofROs and a second set of ROs. For example, second network node 710 mayconfigure, for first network node 705, a first set of ROs associatedwith a first random access configuration (e.g., a first set ofparameters) and a second set of ROs associated with a second randomaccess configuration (e.g., a second set of parameters). In this case,the first set of ROs may be associated with (e.g., occur in timeresources of) an energy-saving mode of the second network node 710, andthe second set of ROs may be associated with (e.g., occur in timeresources of) a non-energy-saving mode of the second network node 710.In some aspects, the energy-saving mode may be a period of time in whichthe second network node 710 uses a low-resolution ADC (e.g., which usesless energy than a high-resolution ADC) and the non-energy saving modemay be a period in which the second network node 710 uses thehigh-resolution ADC (e.g., which uses more energy than thelow-resolution ADC). The terms “low-resolution” and “high-resolution”may be relative terms, such that the low-resolution ADC is an ADC withlower resolution than the high-resolution ADC. In some aspects, thesecond network node 710 may have a single ADC that can operate amultiple resolutions. In this case, “the low-resolution ADC” may referto the single ADC operating at a lower resolution and “thehigh-resolution ADC” may refer to the single ADC operating at a higherresolution.

In some aspects, the first random access configuration and the secondrandom access configuration may differ with respect to one or moreparameters. For example, the first random access channel configurationmay have a higher target reception power, a larger SSB RSRP threshold, alonger preamble format, or a larger SCS, among other examples, than thesecond random access channel configuration. In this way, the secondnetwork node 710 and the first network node 705 may compensate for lowerdetection reliability with the low-resolution ADC and ensure thataccurate uplink timing estimation can be achieved when using thelow-resolution ADC.

Additionally, or alternatively, the first random access channelconfiguration may differ from the second random access channelconfiguration with respect to a timing advance (TA) granularity. Forexample, the first random access channel configuration may be associatedwith a coarser TA granularity to account for the low-resolution ADC,used with the first set of ROs and the first random access channelconfiguration, having a lower uplink timing estimation accuracy.Additionally, or alternatively, the first random access channelconfiguration may differ from the second random access channelconfiguration with regard to a configuration for a particular message ofa four-step RACH procedure. For example, the first random access channelconfiguration may have a different SCS for a msg3 of the four-step RACHprocedure than the second random access channel configuration.Similarly, msg3 may be configured with an extended cyclic prefix (ECP)for the first random access channel configuration, but not for thesecond random access channel configuration. In this case, using asmaller SCS (with a larger cyclic prefix) or an ECP for msg3 maycompensate for a less accurate (more coarse) TA used in connection witha low-resolution ADC. In some aspects, second network node 710 mayindicate usage of a smaller SCS or an ECP in a system information block(SIB) type 1 (SIB1) message or in a grant for a RACH msg2 or msg3 (e.g.,rather than in RACH configuration information).

Additionally, or alternatively, the first random access channelconfiguration may differ from the second random access channelconfiguration with respect to an RAR window or backoff indicator forRACH retransmission. For example, second network node 710 may indicate ashorter RAR window or a shorter backoff indicator for the first set ofROs associated with the low-resolution ADC and the energy saving mode.In this case, the second network node 710 accounts for lower detectionreliability of a RACH preamble when using the low-resolution ADC byenabling the first network node 705 to perform a RACH retransmission ina reduced amount of time, thereby avoiding excess latency.

In some aspects, the second network node 710 may provide an explicitindication of which set of ROs is associated with the low-resolutionADC. For example, second network node 710 may provide an indication toUE 120 over a Uu interface via a broadcast message (e.g., a SIB1 messageor a radio resource control (RRC) message). Additionally, oralternatively, network node 710 may provide an indication over abackhaul interface, such as over the F1 interface (when network nodes705 and 710 are a DU and a CU, respectively, or in a multi-hopcommunication) or an Xn interface (when network nodes 705 and 710 areboth CUs, or in a multi-hop communication). In this case, first networknode 705 may receive an explicit indication of different parameters forthe random access channel configurations or may derive one or moredifferent parameters for the random access channel configurations basedat least in part on which random access channel configuration isassociated with usage of the low-resolution ADC. In some aspects, thesecond network node 710 may provide information identifying the randomaccess channel configurations without an explicit indication of whichset of ROs is associated with usage of the low-resolution ADC. In thiscase, the first network node 705 may determine which set of ROs isassociated with usage of the low-resolution ADC based at least in parton the parameters of the random access channel configurations.

In some aspects, the second network node 710 may configure and indicatea pattern of usage of a low-resolution ADC and an energy-saving mode.For example, the second network node 710 may indicate a pattern for ROconfiguration periods or RACH association periods in which theenergy-saving mode may be enabled and a set of ROs associated with theenergy-saving mode may be used. In this case, the second network node710 may transmit a bitmap identifying the pattern across a set of ROconfiguration periods or RACH association periods.

As further shown in FIG. 7 , and by reference number 720, first networknode 705 and second network node 710 communicate to perform a four-stepRACH procedure, as described above. For example, when using the firstset of ROs for the four-step RACH procedure (e.g., during anenergy-saving mode of the second network node 710), first network node705 and second network node 710 may use the first RACH configuration. Incontrast, when using the second set of ROs for the four-step RACHprocedure (e.g., during a non-energy-saving mode of the second networknode 710), first network node 705 and second network node 710 may usethe second RACH configuration. In this case, when first network node 705initiates a RACH procedure, first network node 705 ensures that a modeof the second network node 710 (e.g., whether second network node 710 isusing a low-resolution ADC or a high-resolution ADC) is accounted for,thereby improving RACH performance relative to using a single RACHconfiguration for all ROs or multiple RACH configurations that are notaligned to whether the second network node 710 is using an energy savingmode.

As indicated above, FIG. 7 is provided as an example. Other examples maydiffer from what is described with respect to FIG. 7 .

FIG. 8 is a diagram illustrating an example process 800 performed, forexample, by a network node, in accordance with the present disclosure.Example process 800 is an example where the network node (e.g., networknode 710) performs operations associated with a four-step random accesschannel procedure.

As shown in FIG. 8 , in some aspects, process 800 may includetransmitting configuration information associated with identifying aplurality of sets of ROs, wherein a first set of ROs, of the pluralityof sets of ROs, is associated with a first set of parameters for alow-resolution ADC and a first mode of the network node, and a secondset of ROs, of the plurality of sets of ROs, is associated with a secondset of parameters for a high-resolution ADC and a second mode of thenetwork node (block 810). For example, the network node (e.g., usingcommunication manager 150 and/or transmission component 1004, depictedin FIG. 10 ) may transmit configuration information associated withidentifying a plurality of sets of ROs, wherein a first set of ROs, ofthe plurality of sets of ROs, is associated with a first set ofparameters for a low-resolution ADC and a first mode of the networknode, and a second set of ROs, of the plurality of sets of ROs, isassociated with a second set of parameters for a high-resolution ADC anda second mode of the network node, as described above.

As further shown in FIG. 8 , in some aspects, process 800 may includecommunicating, when operating in a particular mode of the network node,using a particular set of ROs, of the plurality of sets of ROs,associated with the particular mode of the network node (block 820). Forexample, the network node (e.g., using communication manager 150 and/orreception component 1002 or transmission component 1004, depicted inFIG. 10 ) may communicate, when operating in a particular mode of thenetwork node, using a particular set of ROs, of the plurality of sets ofROs, associated with the particular mode of the network node, asdescribed above.

Process 800 may include additional aspects, such as any single aspect orany combination of aspects described below and/or in connection with oneor more other processes described elsewhere herein.

In a first aspect, the particular mode is the first mode and theparticular set of ROs is the first set of ROs.

In a second aspect, alone or in combination with the first aspect, theparticular mode is the second mode and the particular set of ROs is thesecond set of ROs.

In a third aspect, alone or in combination with one or more of the firstand second aspects, less energy is consumed in the first mode than inthe second mode.

In a fourth aspect, alone or in combination with one or more of thefirst through third aspects, the first set of parameters differs fromthe second set of parameters with regard to at least one of a targetreceive power, a synchronization signal block reference signal receivedpower threshold, a preamble format, or a subcarrier spacing.

In a fifth aspect, alone or in combination with one or more of the firstthrough fourth aspects, process 800 includes transmitting an indicationof which set of ROs, of the plurality of sets of ROs, correspond to thefirst set of ROs and the low-resolution ADC.

In a sixth aspect, alone or in combination with one or more of the firstthrough fifth aspects, the indication is conveyed over a Uu interface ora backhaul interface via at least one of a broadcast message, a systeminformation block message, a dedicated radio resource control message,an F1 interface message, or an Xn interface message.

In a seventh aspect, alone or in combination with one or more of thefirst through sixth aspects, the first set of ROs is associated with afirst timing advance granularity and the second set of ROs is associatedwith a second timing advance granularity that is different from thefirst timing advance granularity.

In an eighth aspect, alone or in combination with one or more of thefirst through seventh aspects, a RACH message 3 (msg3) associated withthe first set of ROs is associated with a first subcarrier spacing (SCS)value and a RACH msg3 associated with the second set of ROs isassociated with a second SCS value that is different from the first SCSvalue.

In a ninth aspect, alone or in combination with one or more of the firstthrough eighth aspects, process 800 includes transmitting an indicationof the first SCS value or the second SCS value using at least one of asystem information block message, a dedicated radio resource controlmessage, a RACH msg2, or a grant of a resource for the RACH msg3.

In a tenth aspect, alone or in combination with one or more of the firstthrough ninth aspects, a RACH message 3 (msg3) associated with the firstset of ROs is configured with an extended cyclic prefix and a RACHmessage 3 (msg3) associated with the second set of ROs is not configuredwith an extended cyclic prefix.

In an eleventh aspect, alone or in combination with one or more of thefirst through tenth aspects, process 800 includes transmittinginformation identifying a pattern for the plurality of sets of ROs.

In a twelfth aspect, alone or in combination with one or more of thefirst through eleventh aspects, process 800 includes transmittinginformation indicating an RAR window or a backoff indicator for RACHretransmission for the first set of ROs, wherein the RAR window or thebackoff indicator is different from an RAR window or a backoff indicatorfor the second set of ROs.

Although FIG. 8 shows example blocks of process 800, in some aspects,process 800 may include additional blocks, fewer blocks, differentblocks, or differently arranged blocks than those depicted in FIG. 8 .Additionally, or alternatively, two or more of the blocks of process 800may be performed in parallel.

FIG. 9 is a diagram illustrating an example process 900 performed, forexample, by a network node, in accordance with the present disclosure.Example process 900 is an example where the network node (e.g., networknode 705) performs operations associated with four-step random accesschannel procedure.

As shown in FIG. 9 , in some aspects, process 900 may include receivingconfiguration information identifying a plurality of sets of ROs,wherein a first set of ROs, of the plurality of sets of ROs, isassociated with a first set of parameters for a low-resolution ADC and afirst mode, and a second set of ROs, of the plurality of sets of ROs, isassociated with a second set of parameters for a high-resolution ADC anda second mode (block 910). For example, the network node (e.g., usingcommunication manager 140 and/or reception component 1002, depicted inFIG. 10 ) may receive configuration information identifying a pluralityof sets of ROs, wherein a first set of ROs, of the plurality of sets ofROs, is associated with a first set of parameters for a low-resolutionADC and a first mode, and a second set of ROs, of the plurality of setsof ROs, is associated with a second set of parameters for ahigh-resolution ADC and a second mode, as described above.

As further shown in FIG. 9 , in some aspects, process 900 may includecommunicating, when based at least in part on a timing corresponding toa particular mode of the first mode or the second mode, using aparticular set of ROs, of the plurality of sets of ROs, associated withthe particular mode (block 920). For example, the network node (e.g.,using communication manager 140 and/or reception component 1002 ortransmission component 1004, depicted in FIG. 10 ) may communicate, whenbased at least in part on a timing corresponding to a particular mode ofthe first mode or the second mode, using a particular set of ROs, of theplurality of sets of ROs, associated with the particular mode, asdescribed above.

Process 900 may include additional aspects, such as any single aspect orany combination of aspects described below and/or in connection with oneor more other processes described elsewhere herein.

In a first aspect, the particular mode is the first mode and theparticular set of ROs is the first set of ROs.

In a second aspect, alone or in combination with the first aspect, theparticular mode is the second mode and the particular set of ROs is thesecond set of ROs.

In a third aspect, alone or in combination with one or more of the firstand second aspects, less energy is consumed in the first mode than inthe second mode.

In a fourth aspect, alone or in combination with one or more of thefirst through third aspects, the first set of parameters differs fromthe second set of parameters with regard to at least one of a targetreceive power, a synchronization signal block reference signal receivedpower threshold, a preamble format, or a subcarrier spacing.

In a fifth aspect, alone or in combination with one or more of the firstthrough fourth aspects, process 900 includes receiving an indication ofwhich set of ROs, of the plurality of sets of ROs, corresponds to thefirst set of ROs and the low-resolution ADC.

In a sixth aspect, alone or in combination with one or more of the firstthrough fifth aspects, the indication is conveyed over a Uu interface ora backhaul interface via at least one of a broadcast message, a systeminformation block message, a dedicated radio resource control message,an F1 interface message, or an Xn interface message.

In a seventh aspect, alone or in combination with one or more of thefirst through sixth aspects, the first set of ROs is associated with afirst timing advance granularity and the second set of ROs is associatedwith a second timing advance granularity that is different from thefirst timing advance granularity.

In an eighth aspect, alone or in combination with one or more of thefirst through seventh aspects, a RACH message 3 (msg3) associated withthe first set of ROs is associated with a first subcarrier spacing (SCS)value and a RACH msg3 associated with the second set of ROs isassociated with a second SCS value that is different from the first SCSvalue.

In a ninth aspect, alone or in combination with one or more of the firstthrough eighth aspects, process 900 includes receiving an indication ofthe first SCS value or the second SCS value via at least one of a systeminformation block message, a dedicated radio resource control message, aRACH msg2, or a grant of a resource for the RACH msg3.

In a tenth aspect, alone or in combination with one or more of the firstthrough ninth aspects, a RACH message 3 (msg3) associated with the firstset of ROs is configured with an extended cyclic prefix and a RACHmessage 3 (msg3) associated with the second set of ROs is not configuredwith an extended cyclic prefix.

In an eleventh aspect, alone or in combination with one or more of thefirst through tenth aspects, process 900 includes receiving informationidentifying a pattern for the plurality of sets of ROs.

In a twelfth aspect, alone or in combination with one or more of thefirst through eleventh aspects, process 900 includes receivinginformation indicating an RAR window or a backoff indicator for RACHretransmission for the first set of ROs, wherein the RAR window or thebackoff indicator is different from an RAR window or a backoff indicatorfor the second set of ROs.

Although FIG. 9 shows example blocks of process 900, in some aspects,process 900 may include additional blocks, fewer blocks, differentblocks, or differently arranged blocks than those depicted in FIG. 9 .Additionally, or alternatively, two or more of the blocks of process 900may be performed in parallel.

FIG. 10 is a diagram of an example apparatus 1000 for wirelesscommunication. The apparatus 1000 may be a network node, or a networknode may include the apparatus 1000. In some aspects, the apparatus 1000includes a reception component 1002 and a transmission component 1004,which may be in communication with one another (for example, via one ormore buses and/or one or more other components). As shown, the apparatus1000 may communicate with another apparatus 1006 (such as a UE, a basestation, or another wireless communication device) using the receptioncomponent 1002 and the transmission component 1004. As further shown,the apparatus 1000 may include the communication manager 140 or 150. Thecommunication manager 140 or 150) may include a RACH configurationcomponent 1008, among other examples.

In some aspects, the apparatus 1000 may be configured to perform one ormore operations described herein in connection with FIG. 7 .Additionally, or alternatively, the apparatus 1000 may be configured toperform one or more processes described herein, such as process 800 ofFIG. 8 , process 900 of FIG. 9 , or a combination thereof. In someaspects, the apparatus 1000 and/or one or more components shown in FIG.10 may include one or more components of the network node described inconnection with FIG. 2 . Additionally, or alternatively, one or morecomponents shown in FIG. 10 may be implemented within one or morecomponents described in connection with FIG. 2 . Additionally, oralternatively, one or more components of the set of components may beimplemented at least in part as software stored in a memory. Forexample, a component (or a portion of a component) may be implemented asinstructions or code stored in a non-transitory computer-readable mediumand executable by a controller or a processor to perform the functionsor operations of the component.

The reception component 1002 may receive communications, such asreference signals, control information, data communications, or acombination thereof, from the apparatus 1006. The reception component1002 may provide received communications to one or more other componentsof the apparatus 1000. In some aspects, the reception component 1002 mayperform signal processing on the received communications (such asfiltering, amplification, demodulation, analog-to-digital conversion,demultiplexing, deinterleaving, de-mapping, equalization, interferencecancellation, or decoding, among other examples), and may provide theprocessed signals to the one or more other components of the apparatus1000. In some aspects, the reception component 1002 may include one ormore antennas, a modem, a demodulator, a MIMO detector, a receiveprocessor, a controller/processor, a memory, or a combination thereof,of the network node described in connection with FIG. 2 .

The transmission component 1004 may transmit communications, such asreference signals, control information, data communications, or acombination thereof, to the apparatus 1006. In some aspects, one or moreother components of the apparatus 1000 may generate communications andmay provide the generated communications to the transmission component1004 for transmission to the apparatus 1006. In some aspects, thetransmission component 1004 may perform signal processing on thegenerated communications (such as filtering, amplification, modulation,digital-to-analog conversion, multiplexing, interleaving, mapping, orencoding, among other examples), and may transmit the processed signalsto the apparatus 1006. In some aspects, the transmission component 1004may include one or more antennas, a modem, a modulator, a transmit MIMOprocessor, a transmit processor, a controller/processor, a memory, or acombination thereof, of the network node described in connection withFIG. 2 . In some aspects, the transmission component 1004 may beco-located with the reception component 1002 in a transceiver.

The transmission component 1004 may transmit configuration informationassociated with identifying a plurality of sets of ROs, wherein a firstset of ROs, of the plurality of sets of ROs, is associated with a firstset of parameters for a low-resolution ADC and a first mode of thenetwork node, and a second set of ROs, of the plurality of sets of ROs,is associated with a second set of parameters for a high-resolution ADCand a second mode of the network node. The reception component 1002 orthe transmission component 1004 may communicate, when operating in aparticular mode of the network node, using a particular set of ROs, ofthe plurality of sets of ROs, associated with the particular mode of thenetwork node. The transmission component 1004 may transmit an indicationof which set of ROs, of the plurality of sets of ROs, correspond to thefirst set of ROs and the low-resolution ADC. The transmission component1004 may transmit an indication of the first SCS value or the second SCSvalue using at least one of a system information block message, adedicated radio resource control message, a RACH msg2, or a grant of aresource for the RACH msg3. The transmission component 1004 may transmitinformation identifying a pattern for the plurality of sets of ROs. Thetransmission component 1004 may transmit information indicating an RARwindow or a backoff indicator for RACH retransmission for the first setof ROs, wherein the RAR window or the backoff indicator is differentfrom an RAR window or a backoff indicator for the second set of ROs.

The reception component 1002 may receive configuration informationidentifying a plurality of sets of ROs, wherein a first set of ROs, ofthe plurality of sets of ROs, is associated with a first set ofparameters for a low-resolution ADC and a first mode, and a second setof ROs, of the plurality of sets of ROs, is associated with a second setof parameters for a high-resolution ADC and a second mode. The receptioncomponent 1002 and/or the transmission component 1004 may communicate,when based at least in part on a timing corresponding to a particularmode of the first mode or the second mode, using a particular set ofROs, of the plurality of sets of ROs, associated with the particularmode of the network node. The reception component 1002 may receive anindication of which set of ROs, of the plurality of sets of ROs,corresponds to the first set of ROs and the low-resolution ADC. Thereception component 1002 may receive an indication of the first SCSvalue or the second SCS value via at least one of a system informationblock message, a dedicated radio resource control message, a RACH msg2,or a grant of a resource for the RACH msg3. The reception component 1002may receive information identifying a pattern for the plurality of setsof ROs. The reception component 1002 may receive information indicatingan RAR window or a backoff indicator for RACH retransmission for thefirst set of ROs, wherein the RAR window or the backoff indicator isdifferent from an RAR window or a backoff indicator for the second setof ROs.

The RACH configuration component 1008 may configure the plurality ofsets of ROs for the apparatus 1000 or for the apparatus 1006. The RACHconfiguration component 1008 may configure the plurality of sets of ROs,such that a first set of ROs is in time resources associated with usageof a low-resolution ADC (e.g., by the apparatus 1000 or the apparatus1006) and that a second set of ROs is in time resources associated withusage of a high-resolution ADC (e.g., by the apparatus 1000 or theapparatus 1006).

The number and arrangement of components shown in FIG. 10 are providedas an example. In practice, there may be additional components, fewercomponents, different components, or differently arranged componentsthan those shown in FIG. 10 . Furthermore, two or more components shownin FIG. 10 may be implemented within a single component, or a singlecomponent shown in FIG. 10 may be implemented as multiple, distributedcomponents. Additionally, or alternatively, a set of (one or more)components shown in FIG. 10 may perform one or more functions describedas being performed by another set of components shown in FIG. 10 .

The following provides an overview of some Aspects of the presentdisclosure:

Aspect 1: A method of wireless communication performed by a networknode, comprising: transmitting configuration information associated withidentifying a plurality of sets of random access channel (RACH)occasions (ROs), wherein a first set of ROs, of the plurality of sets ofROs, is associated with a first set of parameters for a low-resolutionanalog to digital converter (ADC) and a first mode of the network nodeand a second set of ROs, of the plurality of sets of ROs, is associatedwith a second set of parameters for a high-resolution ADC and a secondmode of the network node; and communicating, when operating in aparticular mode of the network node, using a particular set of ROs, ofthe plurality of sets of ROs, associated with the particular mode of thenetwork node.

Aspect 2: The method of Aspect 1, wherein the particular mode is thefirst mode and the particular set of ROs is the first set of ROs.

Aspect 3: The method of Aspect 1, wherein the particular mode is thesecond mode and the particular set of ROs is the second set of ROs.

Aspect 4: The method of any of Aspects 1 to 3, wherein less energy isconsumed in the first mode than in the second mode.

Aspect 5: The method of any of Aspects 1 to 4, wherein the first set ofparameters differs from the second set of parameters with regard to atleast one of: a target receive power, a synchronization signal blockreference signal received power threshold, a preamble format, or asubcarrier spacing.

Aspect 6: The method of any of Aspects 1 to 5, further comprising:transmitting an indication of which set of ROs, of the plurality of setsof ROs, correspond to the first set of ROs and the low-resolution ADC.

Aspect 7: The method of Aspect 6, wherein the indication is conveyedover a Uu interface or a backhaul interface via at least one of: abroadcast message, a system information block message, a dedicated radioresource control message, an F1 interface message, or an Xn interfacemessage.

Aspect 8: The method of any of Aspects 1 to 7, wherein the first set ofROs is associated with a first timing advance granularity and the secondset of ROs is associated with a second timing advance granularity thatis different from the first timing advance granularity.

Aspect 9: The method of any of Aspects 1 to 8, wherein a RACH message 3(msg3) associated with the first set of ROs is associated with a firstsubcarrier spacing (SCS) value and a RACH msg3 associated with thesecond set of ROs is associated with a second SCS value that isdifferent from the first SCS value.

Aspect 10: The method of Aspect 9, further comprising: transmitting anindication of the first SCS value or the second SCS value using at leastone of: a system information block message, a dedicated radio resourcecontrol message, a RACH message 2 (msg2), or a grant of a resource forthe RACH msg3.

Aspect 11: The method of any of Aspects 1 to 10, wherein a RACH message3 (msg3) associated with the first set of ROs is configured with anextended cyclic prefix and a RACH message 3 (msg3) associated with thesecond set of ROs is not configured with an extended cyclic prefix.

Aspect 12: The method of any of Aspects 1 to 11, further comprising:transmitting information identifying a pattern for the plurality of setsof ROs.

Aspect 13: The method of any of Aspects 1 to 12, further comprising:transmitting information indicating a RACH response (RAR) window or abackoff indicator for RACH retransmission for the first set of ROs,wherein the RAR window or the backoff indicator is different from an RARwindow or a backoff indicator for the second set of ROs.

Aspect 14: A method of wireless communication performed by a networknode, comprising: receiving configuration information identifying aplurality of sets of random access channel (RACH) occasions (ROs),wherein a first set of ROs, of the plurality of sets of ROs, isassociated with a first set of parameters for a low-resolution analog todigital converter (ADC) and a first mode and a second set of ROs, of theplurality of sets of ROs, is associated with a second set of parametersfor a high-resolution ADC and a second mode; and communicating, whenbased at least in part on a timing corresponding to a particular mode ofthe first mode or the second mode, using a particular set of ROs, of theplurality of sets of ROs, associated with the particular mode.

Aspect 15: The method of Aspect 14, wherein the particular mode is thefirst mode and the particular set of ROs is the first set of ROs.

Aspect 16: The method of Aspect 14, wherein the particular mode is thesecond mode and the particular set of ROs is the second set of ROs.

Aspect 17: The method of any of Aspects 14 to 16, wherein less energy isconsumed in the first mode than in the second mode.

Aspect 18: The method of any of Aspects 14 to 17, wherein the first setof parameters differs from the second set of parameters with regard toat least one of: a target receive power, a synchronization signal blockreference signal received power threshold, a preamble format, or asubcarrier spacing.

Aspect 19: The method of any of Aspects 14 to 18, further comprising:receiving an indication of which set of ROs, of the plurality of sets ofROs, corresponds to the first set of ROs and the low-resolution ADC.

Aspect 20: The method of Aspect 19, wherein the indication is conveyedover a Uu interface or a backhaul interface via at least one of: abroadcast message, a system information block message, a dedicated radioresource control message, an F1 interface message, or an Xn interfacemessage.

Aspect 21: The method of any of Aspects 14 to 20, wherein the first setof ROs is associated with a first timing advance granularity and thesecond set of ROs is associated with a second timing advance granularitythat is different from the first timing advance granularity.

Aspect 22: The method of any of Aspects 14 to 21, wherein a RACH message3 (msg3) associated with the first set of ROs is associated with a firstsubcarrier spacing (SCS) value and a RACH msg3 associated with thesecond set of ROs is associated with a second SCS value that isdifferent from the first SCS value.

Aspect 23: The method of Aspect 22, further comprising: receiving anindication of the first SCS value or the second SCS value via at leastone of: a system information block message, a dedicated radio resourcecontrol message, a RACH message 2 (msg2), or a grant of a resource forthe RACH msg3.

Aspect 24: The method of any of Aspects 14 to 23, wherein a RACH message3 (msg3) associated with the first set of ROs is configured with anextended cyclic prefix and a RACH message 3 (msg3) associated with thesecond set of ROs is not configured with an extended cyclic prefix.

Aspect 25: The method of any of Aspects 14 to 24, further comprising:receiving information identifying a pattern for the plurality of sets ofROs.

Aspect 26: The method of any of Aspects 14 to 25, further comprising:receiving information indicating a RACH response (RAR) window or abackoff indicator for RACH retransmission for the first set of ROs,wherein the RAR window or the backoff indicator is different from an RARwindow or a backoff indicator for the second set of ROs.

Aspect 27: An apparatus for wireless communication at a device,comprising a processor; memory coupled with the processor; andinstructions stored in the memory and executable by the processor tocause the apparatus to perform the method of one or more of Aspects1-13.

Aspect 28: A device for wireless communication, comprising a memory andone or more processors coupled to the memory, the one or more processorsconfigured to perform the method of one or more of Aspects 1-13.

Aspect 29: An apparatus for wireless communication, comprising at leastone means for performing the method of one or more of Aspects 1-13.

Aspect 30: A non-transitory computer-readable medium storing code forwireless communication, the code comprising instructions executable by aprocessor to perform the method of one or more of Aspects 1-13.

Aspect 31: A non-transitory computer-readable medium storing a set ofinstructions for wireless communication, the set of instructionscomprising one or more instructions that, when executed by one or moreprocessors of a device, cause the device to perform the method of one ormore of Aspects 1-13.

Aspect 32: An apparatus for wireless communication at a device,comprising a processor; memory coupled with the processor; andinstructions stored in the memory and executable by the processor tocause the apparatus to perform the method of one or more of Aspects14-26.

Aspect 33: A device for wireless communication, comprising a memory andone or more processors coupled to the memory, the one or more processorsconfigured to perform the method of one or more of Aspects 14-26.

Aspect 34: An apparatus for wireless communication, comprising at leastone means for performing the method of one or more of Aspects 14-26.

Aspect 35: A non-transitory computer-readable medium storing code forwireless communication, the code comprising instructions executable by aprocessor to perform the method of one or more of Aspects 14-26.

Aspect 36: A non-transitory computer-readable medium storing a set ofinstructions for wireless communication, the set of instructionscomprising one or more instructions that, when executed by one or moreprocessors of a device, cause the device to perform the method of one ormore of Aspects 14-26.

The foregoing disclosure provides illustration and description but isnot intended to be exhaustive or to limit the aspects to the preciseforms disclosed. Modifications and variations may be made in light ofthe above disclosure or may be acquired from practice of the aspects.

As used herein, the term “component” is intended to be broadly construedas hardware and/or a combination of hardware and software. “Software”shall be construed broadly to mean instructions, instruction sets, code,code segments, program code, programs, subprograms, software modules,applications, software applications, software packages, routines,subroutines, objects, executables, threads of execution, procedures,and/or functions, among other examples, whether referred to as software,firmware, middleware, microcode, hardware description language, orotherwise. As used herein, a “processor” is implemented in hardwareand/or a combination of hardware and software. It will be apparent thatsystems and/or methods described herein may be implemented in differentforms of hardware and/or a combination of hardware and software. Theactual specialized control hardware or software code used to implementthese systems and/or methods is not limiting of the aspects. Thus, theoperation and behavior of the systems and/or methods are describedherein without reference to specific software code, since those skilledin the art will understand that software and hardware can be designed toimplement the systems and/or methods based, at least in part, on thedescription herein.

As used herein, “satisfying a threshold” may, depending on the context,refer to a value being greater than the threshold, greater than or equalto the threshold, less than the threshold, less than or equal to thethreshold, equal to the threshold, not equal to the threshold, or thelike.

Even though particular combinations of features are recited in theclaims and/or disclosed in the specification, these combinations are notintended to limit the disclosure of various aspects. Many of thesefeatures may be combined in ways not specifically recited in the claimsand/or disclosed in the specification. The disclosure of various aspectsincludes each dependent claim in combination with every other claim inthe claim set. As used herein, a phrase referring to “at least one of” alist of items refers to any combination of those items, including singlemembers. As an example, “at least one of: a, b, or c” is intended tocover a, b, c, a+b, a+c, b+c, and a+b+c, as well as any combination withmultiples of the same element (e.g., a+a, a+a+a, a+a+b, a+a+c, a+b+b,a+c+c, b+b, b+b+b, b+b+c, c+c, and c+c+c, or any other ordering of a, b,and c).

No element, act, or instruction used herein should be construed ascritical or essential unless explicitly described as such. Also, as usedherein, the articles “a” and “an” are intended to include one or moreitems and may be used interchangeably with “one or more.” Further, asused herein, the article “the” is intended to include one or more itemsreferenced in connection with the article “the” and may be usedinterchangeably with “the one or more.” Furthermore, as used herein, theterms “set” and “group” are intended to include one or more items andmay be used interchangeably with “one or more.” Where only one item isintended, the phrase “only one” or similar language is used. Also, asused herein, the terms “has,” “have,” “having,” or the like are intendedto be open-ended terms that do not limit an element that they modify(e.g., an element “having” A may also have B). Further, the phrase“based on” is intended to mean “based, at least in part, on” unlessexplicitly stated otherwise. Also, as used herein, the term “or” isintended to be inclusive when used in a series and may be usedinterchangeably with “and/or,” unless explicitly stated otherwise (e.g.,if used in combination with “either” or “only one of”).

What is claimed is:
 1. A network node for wireless communication,comprising: a memory; and one or more processors, coupled to the memory,configured to: transmit configuration information associated withidentifying a plurality of sets of random access channel (RACH)occasions (ROs), wherein a first set of ROs, of the plurality of sets ofROs, is associated with a first set of parameters for a low-resolutionanalog to digital converter (ADC) and a first mode of the network nodeand a second set of ROs, of the plurality of sets of ROs, is associatedwith a second set of parameters for a high-resolution ADC and a secondmode of the network node; and communicate, when operating in aparticular mode of the network node, using a particular set of ROs, ofthe plurality of sets of ROs, associated with the particular mode of thenetwork node.
 2. The network node of claim 1, wherein the particularmode is the first mode and the particular set of ROs is the first set ofROs.
 3. The network node of claim 1, wherein the particular mode is thesecond mode and the particular set of ROs is the second set of ROs. 4.The network node of claim 1, wherein less energy is consumed in thefirst mode than in the second mode.
 5. The network node of claim 1,wherein the first set of parameters differs from the second set ofparameters with regard to at least one of: a target receive power, asynchronization signal block reference signal received power threshold,a preamble format, or a subcarrier spacing.
 6. The network node of claim1, wherein the one or more processors are further configured to:transmit an indication of which set of ROs, of the plurality of sets ofROs, correspond to the first set of ROs and the low-resolution ADC. 7.The network node of claim 6, wherein the indication is conveyed over aUu interface or a backhaul interface via at least one of: a broadcastmessage, a system information block message, a dedicated radio resourcecontrol message, an F1 interface message, or an Xn interface message. 8.The network node of claim 1, wherein the first set of ROs is associatedwith a first timing advance granularity and the second set of ROs isassociated with a second timing advance granularity that is differentfrom the first timing advance granularity.
 9. The network node of claim1, wherein a RACH message 3 (msg3) associated with the first set of ROsis associated with a first subcarrier spacing (SCS) value and a RACHmsg3 associate with the second set of ROs is associated with a secondSCS value that is different from the first SCS value.
 10. The networknode of claim 9, wherein the one or more processors are furtherconfigured to: transmit an indication of the first SCS value or thesecond SCS value using at least one of: a system information blockmessage, a dedicated radio resource control message, a RACH message 2(msg2), or a grant of a resource for the RACH msg3.
 11. The network nodeof claim 1, wherein a RACH message 3 (msg3) associated with the firstset of ROs is configured with an extended cyclic prefix and a RACHmessage 3 (msg3) associated with the second set of ROs is not configuredwith an extended cyclic prefix.
 12. The network node of claim 1, whereinthe one or more processors are further configured to: transmitinformation identifying a pattern for the plurality of sets of ROs. 13.The network node of claim 1, wherein the one or more processors arefurther configured to: transmit information indicating a RACH response(RAR) window or a backoff indicator for RACH retransmission for thefirst set of ROs, wherein the RAR window or the backoff indicator isdifferent from an RAR window or a backoff indicator for the second setof ROs.
 14. A network node for wireless communication, comprising: amemory; and one or more processors, coupled to the memory, configuredto: receive configuration information identifying a plurality of sets ofrandom access channel (RACH) occasions (ROs), wherein a first set ofROs, of the plurality of sets of ROs, is associated with a first set ofparameters for a low-resolution analog to digital converter (ADC) and afirst mode and a second set of ROs, of the plurality of sets of ROs, isassociated with a second set of parameters for a high-resolution ADC anda second mode; and communicate, when based at least in part on a timingcorresponding to a particular mode of the first mode or the second mode,using a particular set of ROs, of the plurality of sets of ROs,associated with the particular mode.
 15. The network node of claim 14,wherein the particular mode is the first mode and the particular set ofROs is the first set of ROs.
 16. The network node of claim 14, whereinthe particular mode is the second mode and the particular set of ROs isthe second set of ROs.
 17. The network node of claim 14, wherein lessenergy is consumed in the first mode than in the second mode.
 18. Thenetwork node of claim 14, wherein the first set of parameters differsfrom the second set of parameters with regard to at least one of: atarget receive power, a synchronization signal block reference signalreceived power threshold, a preamble format, or a subcarrier spacing.19. The network node of claim 14, wherein the one or more processors arefurther configured to: receive an indication of which set of ROs, of theplurality of sets of ROs, corresponds to the first set of ROs and thelow-resolution ADC.
 20. The network node of claim 19, wherein theindication is conveyed over a Uu interface or a backhaul interface viaat least one of: a broadcast message, a system information blockmessage, a dedicated radio resource control message, an F1 interfacemessage, or an Xn interface message.
 21. The network node of claim 14,wherein the first set of ROs is associated with a first timing advancegranularity and the second set of ROs is associated with a second timingadvance granularity that is different from the first timing advancegranularity.
 22. The network node of claim 14, wherein a RACH message 3(msg3) associated with the first set of ROs is associated with a firstsubcarrier spacing (SCS) value and a RACH msg3 associated with thesecond set of ROs is associated with a second SCS value that isdifferent from the first SCS value.
 23. The network node of claim 22,wherein the one or more processors are further configured to: receive anindication of the first SCS value or the second SCS value via at leastone of: a system information block message, a dedicated radio resourcecontrol message, a RACH message 2 (msg2), or a grant of a resource forthe RACH msg3.
 24. The network node of claim 14, wherein a RACH message3 (msg3) associated with the first set of ROs is configured with anextended cyclic prefix and a RACH message 3 (msg3) associated with thesecond set of ROs is not configured with an extended cyclic prefix. 25.The network node of claim 14, wherein the one or more processors arefurther configured to: receive information identifying a pattern for theplurality of sets of ROs.
 26. The network node of claim 14, wherein theone or more processors are further configured to: receive informationindicating a RACH response (RAR) window or a backoff indicator for RACHretransmission for the first set of ROs, wherein the RAR window or thebackoff indicator is different from an RAR window or a backoff indicatorfor the second set of ROs.
 27. A method of wireless communicationperformed by a network node, comprising: transmitting configurationinformation associated with identifying a plurality of sets of randomaccess channel (RACH) occasions (ROs), wherein a first set of ROs, ofthe plurality of sets of ROs, is associated with a first set ofparameters for a low-resolution analog to digital converter (ADC) and afirst mode of the network node and a second set of ROs, of the pluralityof sets of ROs, is associated with a second set of parameters for ahigh-resolution ADC and a second mode of the network node; andcommunicating, when operating in a particular mode of the network node,using a particular set of ROs, of the plurality of sets of ROs,associated with the particular mode of the network node.
 28. The methodof claim 27, wherein the first set of parameters differs from the secondset of parameters with regard to at least one of: a target receivepower, a synchronization signal block reference signal received powerthreshold, a preamble format, or a subcarrier spacing.
 29. A method ofwireless communication performed by a network node, comprising:receiving configuration information identifying a plurality of sets ofrandom access channel (RACH) occasions (ROs), wherein a first set ofROs, of the plurality of sets of ROs, is associated with a first set ofparameters for a low-resolution analog to digital converter (ADC) and afirst mode and a second set of ROs, of the plurality of sets of ROs, isassociated with a second set of parameters for a high-resolution ADC anda second mode; and communicating, when based at least in part on atiming corresponding to a particular mode of the first mode or thesecond mode, using a particular set of ROs, of the plurality of sets ofROs, associated with the particular mode.
 30. The method of claim 29,wherein the first set of parameters differs from the second set ofparameters with regard to at least one of: a target receive power, asynchronization signal block reference signal received power threshold,a preamble format, or a subcarrier spacing.